Spray-nozzle



W. D. BALLERSTEDT.

SPRAY NozzLE. v ION APPL4 16. v 1,310,938. Patented July 22, 1919.

SPRAY-NozzLE.

` Specification of Letters Patent.

Application led August 22, 1916. Serial No. 116,385.

To all whom t may concern Be it known that I, WILLIAM D. BALLER- STEDT, a citizen of the United States, residing at Los Angeles, in the co-unty of Los Angeles and State of California, have invented a new and useful Improvement in Spray-Nozzles, of which the following is a specification. v

My invention relates especially to lawn sprinkler heads; and consists of the novel features herein showm, described and claimed.

The accompanying drawings illu-strate the invention.

Figure 1 is an elevation of a spray nozzle or lawn sprinkler head embodying the principles of my invention, the water connection being broken away.

Fig. 2 is a vertical central section on the line m2, Figs. 3 and 4. Fig. 3 is a vertical section on line w3, Figs. 2 and 4.

Fig. 4 is a horizontal section on line m4, Fig. 3,v and looking upwardly.

Fig. 5 is an elevation of the adjustable vortex plug or head removed from the vortex housing or sprinkler head.

Fig. 6 is a top plan View.

The upper end of the water connection or stand-pipe l has external screw threads 2 and an end face 3.

The sprinkler head 4 has a straight-screwthreaded bore 5 extending from the lower end and fitting the screw threads 2, said bore having a flat top surface 6 forming the lower side of the diaphragm 7 having the central discharge orifice 8i and the dished upper side 9 around the orifice. The sloping scalloped rim 10 extends outwardly from the rim of the dished surface 9 and serves as a hand-hold for manipulating the sprinkler head, so that the head may be readily screwed on or off and up or down on the water connection.

The vortex plug'll is exteriorly screwthreaded to fit in the screw-threaded bore 5 and has a slightly conical upper face 12 forming the lower side of the vortex chamber 13, which is thus reduced from the wall of the bore toward the orifice and said plug has two spiral channels 14 and 15 in its periphery, said channels being tapered from the bottom upwardly, so as to cause a speedy, vertical discharge of the water into the vortex chamber and to reduce the volume of water in the vortex chamber toward the outlet of the nozzle so as to discharge the water through the orifice 8 in a conical sheet, whlch whirls ai; a comparatively great speed and 1s thus capable of covering a large area of ground. The annular flat lower face 16 of the plug 11 fits against the face 3 of the water connection, and closes the lower ends of the channels 14 and l5 so that when the head is screwed down the water is shut off and by manipulating the head the volume of water is regulated to control the spray. A stem 17 extends from the center of the lower face` of the plug and has a screw-driver slot 18, so that by removing the head from the stand-pipe the plug may be adjusted up and down as desired to regulate the vortex chamber. 4 i

In actual practice the vortex plugs are set, and the sprinkler heads are screwed upon the stand-pipes, and the only manipulation required is to screw the sprinkler.y

heads up or down to get the desired spray from the water pressure as it exists for the tract to be covered. There are usually 'several nozzles on a line of pipe and it is desired to shut some of them off without shutting others off. This is done by screwing the heads down tight.

It is obvious that my spray nozzles may be u Sed for other purposes than lawn sprinklers.

I claim:

1. The combination with .an externally screw-threaded connection leading from a liquid supply source, of a spray nozzle comprising a sprinkler head having at one end a diaphragm which is provided with a central orifice therein and an inner fiat surface, and a bore, cylindrical throughout its length and extending from the other end of the head to the inner surface of the diaphragm and being coaxial with the orifice, the bore having screw threads which fit the threads of the connection so that the head is thereby adjustably attached to the connection; and a vortex plug adjustably mounted in the bore and adapted to form between one end of the vortex plug and the inner surface of the diaphragm a vortex chamber which is reduced from the Wall of the bore toward the orifice, the vortex plug also having spiral peripheral channels which lead taperingly from the other end of the vortex plug to the vortex chamber, and the liquid supriatented July 22, raie.

ply to the nozzle being regulated by adjusting the head toward or away from the end of the connection and being entirely shut off when the lastmamed end of the vortex plug is seated upon the end ofthe connection.

2. The combination with an externally screw-threaded connection leadingy from a liquid supply source, of a spray nozzle comprising a sprinkler head having at one end a diaphragm which is provided with a central orice therein and an inner flat surface, and a bore, cylindrical throughout its length and extending from the other end of the head to the inner surface of the diaphragm `and being coaxial with the orifice, the bore having screw threads which t the threads of the connectionso that theV head is thereby adjustably attached to the connection; and a vortex plug adjustably mounted in the bore and adapted to form between one end of the vortex plug andthe inner surface of the diaphragm a vortex chamber which isscrew-threaded connection leading' from a liquid supply source, of a spray nozzle comprismg a sprinkler head having at one end a diaphragm which is provided with a central orifice therein and an -inner flat surface, and a bore, cylindrical throughout its length and extending from the other end of the head tothe inner 'surface of the diaphragnrand being coaxial with the orice, the bore hav- 111g screw threads which [it the .threads of the connection so that 'the head is thereby adjustably attached to the connection; and a vortex plug vhaving a slightly conical end and being adJustably mounted in the bore so that the conical end is turned toward the inner surface of the diaphragm and thus forms between the conical end and the inner surface of the diaphragm a vortex chamber which is reduced from thewall ofthe bore toward the orifice, the vortex lug also having spiral peripheral channe s which lead from the other end of the vortex plug to the vortex chamber, and the liquid supply to the nozzle being regulated by adjusting the head' 

